Choosing top 10 best barcode and qr code scanner apps for iphone is not a big task as there are tons of great options. but what makes these apps a step ahead of others is the ability to scan codes fast and accurately.. Barcode is a machine-readable code in the form of numbers and a pattern of parallel lines of varying widths, often used for storing product information for retail. there are handheld barcode readers, which are generally used in warehouses and departmental stores to scan various product information. Download qrafter - qr code and enjoy it on your iphone, ipad, and ipod touch. „qrafter (crafter) is a two-dimensional barcode scanner for iphone, ipad and ipod touch. its main purpose is to scan and parse the contents of qr codes..